Merge "Fix unnecessary main thread assert when background inflating...

 * function, if the view was already attached), automatically canceling the work when the `View`

 * becomes detached.

 *

 * Only use from the main thread.

 * Only use from the main thread. (Unless you are sure that the view is freshly inflated and not

 * attached to a window, in which case you can pass `assertOnMainThread = false`.)

 *

 * When [block] is run, it is run in the context of a [ViewLifecycleOwner] which the caller can use

 * to launch jobs, with confidence that the jobs will be properly canceled when the view is

 *   invoked on.

 * @param block The block of code that should be run when the view becomes attached. It can end up

 *   being invoked multiple times if the view is reattached after being detached.

 * @param assertOnMainThread In general, callers should always be on the main thread. However, in

 *   some rare cases views are inflated on a background thread. If the caller knows that the view is

 *   freshly inflated, they can choose to skip this assertion.

 * @return A [DisposableHandle] to invoke when the caller of the function destroys its [View] and is

 *   no longer interested in the [block] being run the next time its attached. Calling this is an

 *   optional optimization as the logic will be properly cleaned up and destroyed each time the view

@MainThread

fun View.repeatWhenAttached(

    coroutineContext: CoroutineContext = EmptyCoroutineContext,

    assertOnMainThread: Boolean = true,

    block: suspend LifecycleOwner.(View) -> Unit,

): DisposableHandle {

    if (assertOnMainThread) {

        Assert.isMainThread()

    }

    val view = this

    // The suspend block will run on the app's main thread unless the caller supplies a different

    // dispatcher to use. We don't want it to run on the Dispatchers.Default thread pool as

            // If the ViewFlipper is not set to AutoStart, the pause binding is meaningless

            return DisposableHandle {}

        }

        return viewFlipper.repeatWhenAttached {

        return viewFlipper.repeatWhenAttached(assertOnMainThread = false) {

            viewModel.isPaused.collect { viewFlipper.setInhibited(it) }

        }

    }